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POTASSIUM HYDROGEN SULFATE ICSC: 1585
Date of Peer Review: October 2005

Potassium acid sulfate
Sulfuric acid monopotassium salt
Monopotassium sulfate
Potassium bisulfate
CAS # 7646-93-7 KHSO4
RTECS # TS7200000 Molecular mass: 136.2
UN # 2509
EC Index # 016-056-00-4
TYPES OF HAZARD / EXPOSURE ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE FIGHTING
FIRE Not combustible. Gives off irritating or toxic fumes (or gases) in a fire.

In case of fire in the surroundings: use appropriate extinguishing media.
EXPLOSION


EXPOSURE
PREVENT DISPERSION OF DUST! AVOID ALL CONTACT!

Inhalation Cough Sore throat.
Local exhaust or breathing protection.
Fresh air, rest.
Skin Redness. Pain. Skin burns.
Protective gloves. Protective clothing.
First rinse with plenty of water, then remove contaminated clothes and rinse again. Refer for medical attention.
Eyes Redness. Pain. Severe deep burns.
Face shield or eye protection in combination with breathing protection.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion Sore throat. Abdominal pain. Burning sensation. Shock or collapse.
Do not eat, drink, or smoke during work.
Do NOT induce vomiting. Give plenty of water to drink. Refer for medical attention.
SPILLAGE DISPOSAL PACKAGING & LABELLING
Personal protection: P3 filter respirator for toxic particles. Chemical protection suit. Sweep spilled substance into containers. Moisten the remainder.
Unbreakable packaging; put breakable packaging into closed unbreakable container.
EU Classification
Symbol: C
R: 34-37
S: (1/2-)-26-36/37/39-45
UN Classification
UN Hazard Class: 8
UN Pack Group: II
EMERGENCY RESPONSE STORAGE
Transport Emergency Card: TEC (R)-80GC2-II+III
Dry. Separated from strong bases, alcohols, metals, food and feedstuffs.
IPCS
International
Programme on
Chemical Safety
Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities IPCS, CEC 2005

SEE IMPORTANT INFORMATION ON BACK
POTASSIUM HYDROGEN SULFATE ICSC: 1585
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
COLOURLESS TO WHITE HYGROSCOPIC CRYSTALS OR CRYSTALLINE POWDER.

CHEMICAL DANGERS:
The substance decomposes on heating producing toxic fumes. Reacts with alcohols and water. The solution in water is a medium strong acid. Attacks many metals forming flammable/explosive gas (hydrogen - see ICSC 0001).

OCCUPATIONAL EXPOSURE LIMITS:
TLV not established. MAK not established.
INHALATION RISK:
A harmful concentration of airborne particles can be reached quickly when dispersed, especially if powdered.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance is corrosive to the eyes, the skin and the respiratory tract. Corrosive on ingestion.

PHYSICAL PROPERTIES
Melting point (decomposes): 195-214C
Density: 2.2 g/cm
Solubility in water, g/100 ml: 49 (very good)
ENVIRONMENTAL DATA

NOTES

ADDITIONAL INFORMATION


LEGAL NOTICE Neither the CEC nor the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information
IPCS, CEC 2005